There are 25% as many green marbles as brown marbles in Jaslyn's collection of marbles. The number of pink marbles is 40% fewer than the number of brown marbles. There are 308 more pink marbles than green marbles.

1. Find the total number of marbles in the collection.
2. What percentage are the number of brown marbles as compared to the number of pink marbles? Leave your answer as a mixed number in its simplest form.

Green	Brown	Pink
1x5	4x5
	5x4	3x4
5 u	20 u	12 u

(a)
25% = ²⁵₁₀₀ = ¹₄

100% - 40% = 60%
60% = ⁶⁰₁₀₀ = ³₅

The number of brown marbles is the repeated identity. Make the number of brown marbles the same.  LCM of 4 and 5 is 20.

Number of more pink marbles than green marbles
= 12 u - 5 u
= 7 u

7 u = 308

1 u = 308 ÷ 7 = 44

Total number of marbles in the collection
= 5 u + 20 u + 12 u 
= 37 u
= 37 x 44
= 1628

(b)
Percentage of the number of brown marbles as compared to the number of pink marbles
= ⁵₃ x 100%
= ⁵⁰⁰₃ %
= 166²₃ %

Answer(s): (a) 1628; (b) 166²₃ %